Assessing the Validity of the Universal Calibration Concept in THF and DMAC for a Variety of Polymers and Column Supports

Abstract

ABSTRACTThe validity of the universal calibration concept in tetrahydroforan (THF) and in dimethylacetamide (DMAC) is explored in the low molecular weight region for molecular weights less than 10,000 daltons. A variety of calibrant polymer types and column packings are studied utilizing a single capillary GPC-viscometer (DV)/differential refractometer (DRI) chromatographic system. Use is made of the Sanayei-O'Driscoll-Rudin single parameter universal calibration model based on Ko to assess the validity of the universal calibration concept.